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Change default sampling rate from 100% to 0%

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This changes the default parent-based trace sampling rate from
100% to 0%. Due to the high QPS etcd can handle, having 100% trace
sampling leads to very high resource usage. Defaulting to 0% means
that only already-sampled traces will be sampled in etcd.

Fixes #14310

Signed-off-by: Mike Dame <mikedame@google.com>
This commit is contained in:
Mike Dame 2022-08-05 14:56:35 +00:00
parent 9d7e10863e
commit 4c013c91e9
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1 changed files with 1 additions and 0 deletions
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server/embed/etcd.go
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@ -849,6 +849,7 @@ func (e *Etcd) setupTracing(ctx context.Context) (exporter tracesdk.SpanExporter
tracesdk.NewTracerProvider(
tracesdk.WithBatcher(exporter),
tracesdk.WithResource(res),
tracesdk.WithSampler(tracesdk.ParentBased(tracesdk.NeverSample())),
),
),
)